Question

based on the illustration, what is the relationship between ∠1 and ∠4? a they are congruent angles. b they are supplementary. c they form a right angle. d they are complementary.

Explanation:

Step1: Recall vertical - angle property

Vertical angles are formed when two lines intersect. $\angle1$ and $\angle4$ are vertical angles.

Step2: State the property of vertical angles

Vertical angles are congruent.

Answer:

A. They are congruent angles.